Form for lintel construction



Aug. 16, 1960 D. A. GRAVES 1 0m FOR LINTEL CONSTRUCTION Filed Jan. 26. 1959 5 INVENTOR.

. a DANA A GQAVES I BY Ma Z United States Patent FORM FOR LINTEL CONSTRUCTION Dana A. Graves, 7523 Ridge Road, Largo, Fla.

Filed Jan. 26, 1959, Ser. No. 788,973

2 Claims. (Cl. 25-131) The present invention relates to forms for the construction of poured concrete =lintels in dwellings, garages etc.

It is a well known fact that the common method of constructing poured concrete lintels involves an elaborate system of orm-work, built generally of wood, and extending from the footing to and including the lintel of the building. The footage of lumber is considerable, and the labor and material expensive, totaling substantial items of cost.

The primary object of this invention is to reduce the expense of constructing the lintel by minimizing both the labor and the cost of the material.

A further object of this invention is to provide a form for lintel construction, and simple means to support the form from the wall on which the lintel rests, and means to prevent the form from spreading.

The foregoing and other objects are attained by the means described herein and illustrated upon the accompanying drawing, in which:

Fig. 1 is a vertical view showing the structure below the lintel.

Fig. 2 is a perspective view showing the details in erecting the form.

Fig. 3 is a detail showing the steel plate construction of the form.

Fig. 4 is a vertical view showing the wall with the lintel in place.

In accordance with my invention, the lintel is to be constructed over the openings in a wall .11 of a building, preferably of concrete blocks 12; these blocks form a flat surface 13 to receive the lintel 10. The lintel 10 and wall 11 are of the same width.

In this .case the lintel is made of poured concrete using a form of special construction.

The form itself is constructed of right and left side members 14 .and 15; each side member consists of a lower upright beam 16 and an upper upright beam 17; these upright beams are separated by a steel plate 1 8, which is secured to the lower upright 16, by nails or screws 19, and both lower and upper uprights are held together by means of batts 20, nailed to the uprights as at 21. The other side member of the term is similarly constructed.

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The steel plates 18, about a quarter of an inch thick project inwardly and are adapted to rest on the surface 13 of the concrete blocks 12. Any other device resting on the Wall and attached to the side members may be substituted.

To provide a bottom for the trough or form, I place a beam 22, the width of the lintel 10, on the steel plates 18. The side members 14 and 15 are adapted to fit close against the beam 22, and stay parallel apart.

To prevent the sides of the form from spreading I provide a series of yokes 23. Each yoke 23 has a transverse member 24, .and hanging members 25 and 26 fastened to the transverse member 24 with nails 27, and adapted to hold the side members .14 and 15 in spaced parallel relation.

After the forms are in place the concrete is poured and permitted to solidify, and when set, the forms with the steel plates 18 are removed thus leaving the bottom beam 22 to stay with the concrete. At this point, the lintel 10 and bottom beam 22 drop to the surface of the blocks 13 a distance of a quarter of an inch, the thickness of the steel plates 18.

If required, proper reinforcement may be used in the concrete lintels.

It must be realized that considerable variation is possible in the details of the construction herein shown and described, and I -do not intend to limit myself thereto except as pointed out in the following claims, in which it is my intention to claim all the novelty inherent in my improvement as broadly as is permitted by the state of the art.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is:

1. In a form construction for lintels over a wall with openings therein, said wall being the thickness of the lintel, a trough formed by right and left side members spaced apart the thickness of the wall, and adapted to hug such wall, each side member having superimposed lower and upper uprights held together by any desired means, narrow steel plates attached to the top of the lower upright and extending inwardly through the length of said lower upright, said plates are adapted to span the lintel opening and rest on the masonry adjacent the lintel opening, a bottom beam the width of the lintel resting on and covering the steel plates, and means to prevent the spreading of the side members.

2. Form .as claimed in claim 1, said bottom beam is arranged to remain under the lintel and to drop to the top of the wall when the forms and plates are removed.

References Cited in the file of this patent UNITED STATES PATENTS 1,101,484 Clark h i June 23, 1914 1,116,805 Daley K Y Nov. 10, 1914 2,761,475 La Hayne Sept. 4, 1956 FOREIGN PATENTS 541,017 Great Britain Nov. 10, 1941 

